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Finding the Fourth Proportional to 10,011.52, 15,018.06 and 2,991

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Solution

The fourth proportional to 10,011.52, 15,018.06 and 2,991 is: 4,486.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,011.52 : 15,018.06 = 2,991 : x
  2. Step 2: Convert to fraction form
    10,011.52/15,018.06 = 2,991/x
  3. Step 3: Cross multiply
    10,011.52x = 15,018.06 × 2,991
  4. Step 4: Simplify right side
    10,011.52x = 44,919,017.46
  5. Step 5: Solve for x
    x = 44,919,017.46/10,011.52
  6. Step 6: Final answer
    x = 4,486.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.